We found this sophisticated meter circuit in an article in Radio Electronics magazine from June 1959. The article taught how to assemble it. Transistors are common types at the time.
A binary counter until 2" or a divide-by-the same value can be built by cascading n 4013...
We can control the frequency of an oscillator from digital circuits or from the output of a...
Found on Popular Electronics this circuit has variations found throughout this site and section....